diff options
Diffstat (limited to 'ext/cdio/gstcdiocddasrc.c')
| -rw-r--r-- | ext/cdio/gstcdiocddasrc.c | 352 |
1 files changed, 352 insertions, 0 deletions
diff --git a/ext/cdio/gstcdiocddasrc.c b/ext/cdio/gstcdiocddasrc.c new file mode 100644 index 00000000..e4363822 --- /dev/null +++ b/ext/cdio/gstcdiocddasrc.c @@ -0,0 +1,352 @@ +/* GStreamer + * Copyright (C) 2006 Tim-Philipp Müller <tim centricular net> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include "gstcdiocddasrc.h" + +#include <gst/gst.h> +#include "gst/gst-i18n-plugin.h" + +#include <sys/types.h> +#include <string.h> +#include <errno.h> + +enum +{ + PROP0 = 0, + PROP_READ_SPEED +}; + +static GstElementDetails gst_cdio_cdda_src_details = { + "CD Audio (cdda) Source", + "Source/File", + "Read audio from CD using libcdio", + "Tim-Philipp Müller <tim centricular net>", +}; + +GST_BOILERPLATE (GstCdioCddaSrc, gst_cdio_cdda_src, GstCddaBaseSrc, + GST_TYPE_CDDA_BASE_SRC); + +static void gst_cdio_cdda_src_finalize (GObject * obj); +static void gst_cdio_cdda_src_set_property (GObject * object, guint prop_id, + const GValue * value, GParamSpec * pspec); +static void gst_cdio_cdda_src_get_property (GObject * object, guint prop_id, + GValue * value, GParamSpec * pspec); + +static gchar *gst_cdio_cdda_src_get_default_device (GstCddaBaseSrc * src); +static GstBuffer *gst_cdio_cdda_src_read_sector (GstCddaBaseSrc * src, + gint sector); +static gboolean gst_cdio_cdda_src_open (GstCddaBaseSrc * src, + const gchar * device); +static void gst_cdio_cdda_src_close (GstCddaBaseSrc * src); + +#define DEFAULT_READ_SPEED -1 + +static void +gst_cdio_cdda_src_base_init (gpointer g_class) +{ + GstElementClass *element_class = GST_ELEMENT_CLASS (g_class); + + gst_element_class_set_details (element_class, &gst_cdio_cdda_src_details); +} + +static gchar * +gst_cdio_cdda_src_get_default_device (GstCddaBaseSrc * cddabasesrc) +{ + GstCdioCddaSrc *src; + gchar *default_device, *ret; + + src = GST_CDIO_CDDA_SRC (cddabasesrc); + + /* src->cdio may be NULL here */ + default_device = cdio_get_default_device (src->cdio); + + ret = g_strdup (default_device); + free (default_device); + + GST_LOG_OBJECT (src, "returning default device: %s", GST_STR_NULL (ret)); + + return ret; +} + +static gchar ** +gst_cdio_cdda_src_probe_devices (GstCddaBaseSrc * cddabasesrc) +{ + char **devices, **ret, **d; + + /* FIXME: might return the same hardware device twice, e.g. + * as /dev/cdrom and /dev/dvd - gotta do something more sophisticated */ + devices = cdio_get_devices (DRIVER_DEVICE); + + if (devices == NULL) { + GST_DEBUG_OBJECT (cddabasesrc, "no devices found"); + return NULL; + } + + if (*devices == NULL) { + GST_DEBUG_OBJECT (cddabasesrc, "no devices found"); + free (devices); + return NULL; + } + + ret = g_strdupv (devices); + for (d = devices; *d != NULL; ++d) { + GST_DEBUG_OBJECT (cddabasesrc, "device: %s", GST_STR_NULL (*d)); + free (*d); + } + free (devices); + + return ret; +} + +static GstBuffer * +gst_cdio_cdda_src_read_sector (GstCddaBaseSrc * cddabasesrc, gint sector) +{ + GstFlowReturn flowret; + GstCdioCddaSrc *src; + GstBuffer *buf; + + src = GST_CDIO_CDDA_SRC (cddabasesrc); + + flowret = gst_pad_alloc_buffer (GST_BASE_SRC (src)->srcpad, + GST_BUFFER_OFFSET_NONE, CDIO_CD_FRAMESIZE_RAW, + GST_PAD_CAPS (GST_BASE_SRC (src)->srcpad), &buf); + + if (flowret != GST_FLOW_OK) { + GST_DEBUG_OBJECT (src, "gst_pad_alloc_buffer() failed! (ret=%d)", flowret); + return NULL; + } + + if (cdio_read_audio_sector (src->cdio, GST_BUFFER_DATA (buf), sector) != 0) { + GST_WARNING_OBJECT (src, "read at sector %d failed!", sector); + GST_ELEMENT_ERROR (src, RESOURCE, READ, + (_("Could not read from CD.")), + ("cdio_read_audio_sector at %d failed: %s", sector, + g_strerror (errno))); + gst_buffer_unref (buf); + return NULL; + } + + return buf; +} + +static gboolean +notcdio_track_is_audio_track (const CdIo * p_cdio, track_t i_track) +{ + return (cdio_get_track_format (p_cdio, i_track) == TRACK_FORMAT_AUDIO); +} + +#if (LIBCDIO_VERSION_NUM >= 76) + +static GstTagList * +gst_cdio_cdda_src_get_cdtext (GstCdioCddaSrc * src, track_t i_track) +{ + GstTagList *tags = NULL; + const gchar *artist; + const gchar *title; + cdtext_t *t; + + t = cdio_get_cdtext (src->cdio, i_track); + if (t == NULL) { + GST_DEBUG_OBJECT (src, "no CD-TEXT for track %u", i_track); + return NULL; + } + + gst_cdio_cdda_src_add_cdtext_field (src, t, CDTEXT_PERFOMER, + GST_TAG_ARTIST, &tags); + + gst_cdio_cdda_src_add_cdtext_field (src, t, CDTEXT_TITLE, + GST_TAG_TITLE, &tags); + + return tags; +} + +#else + +static GstTagList * +gst_cdio_cdda_src_get_cdtext (GstCdioCddaSrc * src, track_t i_track) +{ + GST_DEBUG_OBJECT (src, "This libcdio version (%u) does not support " + "CDTEXT (want >= 76)", LIBCDIO_VERSION_NUM); + return NULL; +} + +#endif + +static gboolean +gst_cdio_cdda_src_open (GstCddaBaseSrc * cddabasesrc, const gchar * device) +{ + GstCdioCddaSrc *src; + discmode_t discmode; + gint first_track, num_tracks, i; + + src = GST_CDIO_CDDA_SRC (cddabasesrc); + + g_assert (device != NULL); + g_assert (src->cdio == NULL); + + GST_LOG_OBJECT (src, "trying to open device %s", device); + + src->cdio = cdio_open (device, DRIVER_UNKNOWN); + + if (src->cdio == NULL) { + GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, + (_("Could not open CD device for reading.")), + ("cdio_open() failed: %s", g_strerror (errno))); + return FALSE; + } + + discmode = cdio_get_discmode (src->cdio); + GST_LOG_OBJECT (src, "discmode: %d", (gint) discmode); + + if (discmode != CDIO_DISC_MODE_CD_DA && discmode != CDIO_DISC_MODE_CD_MIXED) { + GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, + (_("Disc is not an Audio CD.")), ("discmode: %d", (gint) discmode)); + return FALSE; + } + + first_track = cdio_get_first_track_num (src->cdio); + num_tracks = cdio_get_num_tracks (src->cdio); + + if (num_tracks <= 0 || first_track < 0) + return TRUE; /* base class will generate 'has no tracks' error */ + + if (src->read_speed != -1) { +#if (LIBCDIO_VERSION_NUM >= 76) + cdio_set_speed (src->cdio, src->read_speed); +#else + GST_WARNING_OBJECT (src, "This libcdio version (%u) does not support " + "setting the drive reading speed (want >= 76)", LIBCDIO_VERSION_NUM); +#endif + } + + GST_LOG_OBJECT (src, "%u tracks, first track: %d", num_tracks, first_track); + + for (i = 0; i < num_tracks; ++i) { + GstCddaBaseSrcTrack track = { 0, }; + gint len_sectors; + + len_sectors = cdio_get_track_sec_count (src->cdio, i + first_track); + + track.num = i + first_track; + track.is_audio = notcdio_track_is_audio_track (src->cdio, i + first_track); + + /* Note: LSN/LBA confusion all around us; in any case, this does + * the right thing here (for cddb id calculations etc. as well) */ + track.start = cdio_get_track_lsn (src->cdio, i + first_track); + track.end = track.start + len_sectors - 1; /* -1? */ + track.tags = gst_cdio_cdda_src_get_cdtext (src, i + first_track); + + gst_cdda_base_src_add_track (GST_CDDA_BASE_SRC (src), &track); + } + + return TRUE; +} + +static void +gst_cdio_cdda_src_close (GstCddaBaseSrc * cddabasesrc) +{ + GstCdioCddaSrc *src = GST_CDIO_CDDA_SRC (cddabasesrc); + + g_assert (src->cdio != NULL); + + if (src->cdio) { + cdio_destroy (src->cdio); + src->cdio = NULL; + } +} + +static void +gst_cdio_cdda_src_init (GstCdioCddaSrc * src, GstCdioCddaSrcClass * klass) +{ + src->read_speed = DEFAULT_READ_SPEED; /* don't need atomic access here */ + src->cdio = NULL; +} + +static void +gst_cdio_cdda_src_finalize (GObject * obj) +{ + if (G_OBJECT_CLASS (parent_class)->finalize) + G_OBJECT_CLASS (parent_class)->finalize (obj); +} + +static void +gst_cdio_cdda_src_class_init (GstCdioCddaSrcClass * klass) +{ + GstCddaBaseSrcClass *cddabasesrc_class = GST_CDDA_BASE_SRC_CLASS (klass); + GObjectClass *gobject_class = G_OBJECT_CLASS (klass); + + gobject_class->set_property = gst_cdio_cdda_src_set_property; + gobject_class->get_property = gst_cdio_cdda_src_get_property; + gobject_class->finalize = gst_cdio_cdda_src_finalize; + + cddabasesrc_class->open = gst_cdio_cdda_src_open; + cddabasesrc_class->close = gst_cdio_cdda_src_close; + cddabasesrc_class->read_sector = gst_cdio_cdda_src_read_sector; + cddabasesrc_class->probe_devices = gst_cdio_cdda_src_probe_devices; + cddabasesrc_class->get_default_device = gst_cdio_cdda_src_get_default_device; + + g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_READ_SPEED, + g_param_spec_int ("read-speed", "Read speed", + "Read from device at the specified speed (-1 = default)", -1, 100, + DEFAULT_READ_SPEED, G_PARAM_READWRITE)); +} + +static void +gst_cdio_cdda_src_set_property (GObject * object, guint prop_id, + const GValue * value, GParamSpec * pspec) +{ + GstCdioCddaSrc *src = GST_CDIO_CDDA_SRC (object); + + switch (prop_id) { + case PROP_READ_SPEED:{ + gint speed; + + speed = g_value_get_int (value); + gst_atomic_int_set (&src->read_speed, speed); + break; + } + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +static void +gst_cdio_cdda_src_get_property (GObject * object, guint prop_id, + GValue * value, GParamSpec * pspec) +{ + GstCdioCddaSrc *src = GST_CDIO_CDDA_SRC (object); + + switch (prop_id) { + case PROP_READ_SPEED:{ + gint speed; + + speed = g_atomic_int_get (&src->read_speed); + g_value_set_int (value, speed); + break; + } + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} |